== sanity test 123ab: verify statahead work by using statx ========================================================== 08:17:28 (1764940648)
striped dir -i1 -c2 -H crush /mnt/lustre/d123ab.sanity
total: 100 open/close in 1.10 seconds: 91.27 ops/second
llite.lustre-ffff9ecccaa71800.statahead_max=0
100

real	0m1.105s
user	0m0.012s
sys	0m0.147s
statx -l 100 files without statahead: 1 sec
llite.lustre-ffff9ecccaa71800.statahead_max=32
32
100

real	0m0.211s
user	0m0.004s
sys	0m0.048s
statx -l 100 files with statahead: 1 sec
statahead total: 28
statahead wrong: 0
agl total: 28
total: 900 open/close in 9.14 seconds: 98.49 ops/second
llite.lustre-ffff9ecccaa71800.statahead_max=0
1000

real	0m10.405s
user	0m0.082s
sys	0m1.204s
statx -l 1000 files without statahead: 11 sec
llite.lustre-ffff9ecccaa71800.statahead_max=32
32
1000

real	0m1.225s
user	0m0.030s
sys	0m0.421s
statx -l 1000 files with statahead: 2 sec
statahead total: 29
statahead wrong: 0
agl total: 29
statx -l done
rm -r /mnt/lustre/d123ab.sanity/: 7 seconds
rm done
statahead total: 29
statahead wrong: 0
agl total: 29